Screening device for belt conveyor

Abstract

The utility model discloses a screening device for a belt conveyor, which comprises a support component, a screening component and a screening component. The shell is erected on the top of the support assembly and located above the conveying belt, the bottom and one end of the shell are open, and a cover plate is hinged to the top of the shell; the screening assembly is rotationally arranged in an inner cavity of the shell in a dip angle adjustable mode; the feeding hopper is arranged at the top of the non-opened end of the shell; one end of the discharging slide way is fixedly arranged at the opening end of the shell, and the other end of the discharging slide way extends to the outer side of the belt conveyor; and the attached vibration exciters are symmetrically arranged on the two sides of the shell. Materials subjected to preliminary screening fall onto the screening assembly through the feeding hopper, the attached vibration exciter indirectly drives the screening assembly to vibrate through the shell, the materials are subjected to secondary screening, and further screening of the materials can be achieved without refitting or replacing original multi-stage screening equipment. And the material screening fineness is improved at lower time and economic cost.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor technology, and specifically to a screening device for belt conveyors. Background Technology

[0002] Belt conveyors are a type of mechanical equipment widely used in material handling systems. They mainly consist of a drive unit, a load-bearing belt, a tensioning device, a support structure, and a control device. Belt conveyors can be arranged in straight lines or curves and are suitable for material transport in horizontal, inclined, or even vertical directions. They are widely used in various occasions such as mines, ports, factories, and warehouses.

[0003] When belt conveyors are used in the sand making industry, belt conveyors need to be installed at each discharge port of the multi-stage vibrating screen to transport materials of different size grades to different designated locations. Since the number of screen layers that can be installed on the vibrating screen is limited, it can generally only screen three or four size grades of materials, resulting in a large range of material sizes falling onto the belt, which is difficult to fully meet the needs. If the screen aperture and the number of screen layers of the multi-stage vibrating screen are directly adjusted, it is necessary to replace the screen with a different aperture or replace the multi-stage vibrating screen with one containing more screen layers, which is not only costly but also time-consuming and labor-intensive.

[0004] Therefore, this application proposes a screening device for belt conveyors to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this utility model is to overcome the above-mentioned shortcomings and provide a screening device for belt conveyors, which screens the material before it falls onto the belt, removes the material that does not meet the size requirements, and allows the material that meets the size requirements to fall onto the belt and be transported to the designated location.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A screening device for a belt conveyor includes: a support assembly fixedly mounted on both sides of the belt conveyor support; a housing mounted on top of the support assembly and located above the conveyor belt, the housing having an opening at the bottom and one end, and a cover plate hinged to the top; a screening assembly rotatably mounted at an adjustable angle inside the housing; a feed hopper located at the top of the closed end of the housing; a discharge chute fixed at one end at the open end of the housing, and extending to the outside of the belt conveyor at the other end; and attached vibrators symmetrically arranged on both sides of the housing.

[0008] Furthermore, the screening assembly includes a screen, side plates fixedly disposed on both sides of the screen, a plurality of evenly arranged support rods fixedly disposed between the two side plates and abutting the bottom surface of the screen, and positioning studs fixedly disposed at both ends of the side plates. A downward-opening slot is provided in the center of the side plate.

[0009] Furthermore, the inner cavity of the housing is symmetrically provided with rotating shafts that engage with the slots, and arc-shaped limiting holes are provided on both sides of the housing corresponding to the positioning studs.

[0010] Furthermore, limit blocks are fixedly provided on both outer walls of the housing at locations corresponding to the arc-shaped limiting holes. The limit blocks have through holes that coincide with the arc-shaped limiting holes. Multiple interconnected circular grooves are provided on the end face of the limit blocks away from the housing. A nut is threadedly connected to one end of the positioning stud that passes through the limit block. The nut includes a cylindrical part for inserting into the circular groove and a hexagonal part for abutting and pressing against the end face of the limit block. The cylindrical part and the hexagonal part are integrally formed.

[0011] Furthermore, the support assembly includes four columns and multiple reinforcing connecting rods fixedly disposed between the four columns. A first positioning post is fixedly disposed on the top of each column. An extended support block corresponding to each of the four columns is fixedly disposed on the housing. A second positioning post is disposed at the bottom of the extended support block corresponding to the first positioning post. A spring is sleeved between the first positioning post and the second positioning post.

[0012] The beneficial effects of this utility model are reflected in:

[0013] 1. This utility model sets up support assemblies on both sides between belt conveyors, and sets up a screening assembly with an adjustable inclination angle in the inner cavity on the support assemblies and attached vibrator housings on both sides. The material that has undergone preliminary screening falls onto the screening assembly through the feed hopper. The attached vibrator indirectly drives the screening assembly to vibrate through the housing, thus performing secondary screening of the material. Further screening of the material can be achieved without modifying or replacing the original multi-stage screening equipment, thereby improving the fineness of material screening with lower time and economic costs.

[0014] 2. This utility model features a screening assembly consisting of a screen, side plates, support rods, and positioning studs. The side plates have slots, and the housing has a corresponding rotating shaft and an arc-shaped limiting groove. This allows the screening assembly to rotate around the rotating shaft within the limiting range of the arc-shaped limiting groove, thereby adjusting the screen's inclination angle and thus regulating the material feed speed. A locking assembly consisting of a limiting block and a nut locks the positioning studs in the arc-shaped limiting groove, effectively locking the screen's inclination angle. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram showing the installation position and usage status of an embodiment of the present invention;

[0017] Figure 2 This is a half-sectional schematic diagram of the shell according to an embodiment of the present invention;

[0018] Figure 3 This is an exploded view of the main structure of an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the shell according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the housing according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the screening component and the housing in one embodiment of the present invention;

[0022] Figure 7 This is an embodiment of the present utility model. Figure 6 Enlarged view of the structure at point A;

[0023] Figure 8 This is a schematic diagram of the overall structure of the limiting block according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram illustrating the engagement of the positioning stud, the limiting block, and the nut according to an embodiment of the present invention.

[0025] In the diagram: 1. Support assembly; 101. Column; 102. Reinforcing connecting rod; 2. Belt conveyor support; 3. Housing; 4. Cover plate; 5. Screening assembly; 51. Screen; 52. Side plate; 53. Support rod; 54. Positioning stud; 6. Feed hopper; 7. Attached vibrator; 8. Slot; 9. Rotating shaft; 10. Arc-shaped limiting hole; 11. Limiting block; 12. Through hole; 13. Circular groove; 14. Nut; 141. Cylindrical part; 142. Hexagonal part; 15. First positioning post; 16. Extended support block; 17. Second positioning post; 18. Spring; 19. Discharge slide. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figure 1-9 As shown, this utility model provides a screening device for belt conveyors, comprising:

[0028] The bracket assembly 1 is fixedly installed on both sides of the belt conveyor bracket 2;

[0029] Housing 3 is mounted on top of support assembly 1 and located above the conveyor belt. The bottom and one end of housing 3 are open, and a cover plate 4 is hinged to the top.

[0030] Screening component 5 is rotatably mounted in the inner cavity of housing 3 with an adjustable tilt angle;

[0031] The feed hopper 6 is located at the top of the unopened end of the housing 3;

[0032] The discharge chute 19 is fixed at one end of the opening end of the housing 3 and extends to the outside of the belt conveyor at the other end.

[0033] The attached vibrator 7 is symmetrically arranged on both sides of the housing 3.

[0034] The material that has undergone preliminary screening falls onto the screening assembly 5 through the feed hopper 6. The attached vibrator 7 drives the housing 3 to vibrate, which in turn drives the screening assembly 5 to vibrate. This causes the screening assembly 5 to further screen the material falling into the inner cavity of the housing 3 into two size grades. The larger material is discharged from the discharge chute 19, while the smaller material falls onto the conveyor belt and enters the next process. Further screening of materials can be achieved without modifying or replacing the original multi-stage screening equipment, thus improving the fineness of material screening with lower time and economic costs.

[0035] In one embodiment, the screening assembly 5 includes a screen 51, side plates 52 fixedly disposed on both sides of the screen 51, a plurality of evenly arranged support rods 53 fixedly disposed between the two side plates 52 and abutting the bottom surface of the screen 51, and positioning studs 54 fixedly disposed at both ends of the side plates 52. A downward-opening slot 8 is provided in the center of the side plate 52.

[0036] This design provides a good shaping and support effect for the screen 51 through the frame formed by the side plate 52 and multiple support rods 53, ensuring that the screen 51 will not be easily deformed due to the impact of the material and its own vibration during operation.

[0037] In one embodiment, the inner cavity of the housing 3 is symmetrically provided with rotating shafts 9 that engage with the slots 8, and arc-shaped limiting holes 10 are provided on both sides of the housing 3 at the locations corresponding to the positioning studs 54.

[0038] With this design, the slots 8 of the two side plates 52 are both locked onto the rotating shaft 9, while the four positioning studs 54 are inserted into the arc-shaped limiting holes 10. The whole formed by the screen 51, the side plates 52 and the support rod 53 can rotate around the rotating shaft 9, thereby changing the tilt angle of the screen 51 and thus changing the feeding speed of the material on the screen 51 to adapt to different usage requirements. A locking piece is fitted onto the end of the positioning stud 54 that extends outside the housing 3, and the locking piece is adjusted to press against the outer wall of the housing 3, thus fixing the angle of the screen 51.

[0039] In one embodiment, limit blocks 11 are fixedly provided on both outer walls of the housing 3 at locations corresponding to the arc-shaped limiting holes 10. The limit blocks 11 have through holes 12 that coincide with the arc-shaped limiting holes 10. Multiple interconnected circular grooves 13 are provided on the end face of the limit blocks 11 away from the housing 3. A nut 14 is threadedly connected to one end of the positioning stud 54 that passes through the limit blocks 11. The nut 14 includes a cylindrical part 141 for inserting into the circular groove 13 and a hexagonal part 142 for abutting and pressing against the end face of the limit blocks 11. The cylindrical part 141 and the hexagonal part 142 are integrally formed.

[0040] With this design, when the tilt angle of the screen 51 needs to be locked, the nut 14 is inserted through one end of the positioning stud 54 through the limiting block 11 and continuously tightened until the cylindrical part 141 of the nut 14 is fully inserted into the circular groove 13 and the hexagonal part 142 abuts against the end face of the limiting block 11. At this time, due to the limiting effect of the circular groove 13 on the cylindrical part 141, the nut 14 cannot move on the limiting block 11, so that the positioning stud 54 cannot slide along the arc-shaped limiting hole 10, and the whole formed by the screen 51, the side plate 52 and the support rod 53 cannot rotate around the rotating shaft 9, thus achieving effective locking of the tilt angle of the screen 51.

[0041] In one embodiment, the support assembly 1 includes four columns 101 and multiple reinforcing connecting rods 102 fixedly disposed between the four columns 101. A first positioning post 15 is fixedly disposed on the top of the columns 101. An extended support block 16 corresponding to each of the four columns 101 is fixedly disposed on the housing 3. A second positioning post 17 is disposed at the bottom of the extended support block 16 corresponding to the first positioning post 15. A spring 18 is sleeved between the first positioning post 15 and the second positioning post 17.

[0042] With this design, multiple reinforcing rods 102 connect the four columns 101 to form a structurally stable whole, enabling it to withstand the impact transmitted by the shell 3 and the other structures mounted on the shell 3 during vibration, and to provide reliable support for them.

[0043] The support assembly 1 and the housing 3 are flexibly connected by a spring 18 to reduce the impact of the housing 3 on the support assembly 1 when it vibrates, thus ensuring the stability of the overall structure. The first positioning post 15 and the second positioning post 17 guide the extension and retraction of the spring 18 to prevent it from moving arbitrarily and detaching from the column 101 and the extended support block 16.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0045] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, "multiple" refers to two or more. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A screening device for a belt conveyor, characterized in that The utility model relates to a kind of belt conveyer screening device, including: Support assembly (1) is fixedly arranged at the both sides of belt conveyor support (2); Shell (3) is erected on the top of the support assembly (1) and is located above the conveying belt, the bottom and one end of the shell (3) are opened, and the top is hingedly provided with cover plate (4); Screening assembly (5) is rotatably arranged in the inner cavity of the shell (3) with adjustable inclination angle; Feed hopper (6) is arranged on the top of the unopened end of the shell (3); Discharge chute (19) is fixedly arranged at the opened end of the shell (3), and the other end extends to the outside of the belt conveyor; Attached exciter (7) is symmetrically arranged at the both sides of the shell (3); The screening assembly (5) includes screen (51), side plate (52) fixedly arranged at the both sides of the screen (51), a plurality of uniformly arranged support rods (53) fixedly arranged between the two side plates (52) and abutting the bottom surface of the screen (51), and positioning stud (54) fixedly arranged at the both ends of the side plate (52), the middle of the side plate (52) is provided with a clamping groove (8) opening downward; The inner cavity of the shell (3) is symmetrically provided with a rotating shaft (9) matched with the clamping groove (8), and the both sides of the shell (3) are provided with an arc-shaped limiting hole (10) corresponding to the positioning stud (54); The outer wall of the both sides of the shell (3) is fixedly provided with a limiting block (11) corresponding to the arc-shaped limiting hole (10), a through hole (12) coinciding with the arc-shaped limiting hole (10) is formed in the limiting block (11), a plurality of circular grooves (13) are formed in the end face of the limiting block (11) away from the shell (3), a nut (14) is threadedly connected to one end of the limiting block (11) through the positioning stud (54), the nut (14) includes a cylindrical portion (141) for inserting into the circular groove (13) and a hexagonal portion (142) for abutting and pressing the end face of the limiting block (11), and the cylindrical portion (141) and the hexagonal portion (142) are integrally formed.

2. A screening device for a belt conveyor as claimed in claim 1, characterized in that The support assembly (1) includes four vertical columns (101) and a plurality of reinforcing connecting rods (102) fixedly arranged between the four vertical columns (101), the top of the vertical column (101) is fixedly provided with a first positioning column (15), the shell (3) is fixedly provided with an outer extension support block (16) corresponding to the four vertical columns (101), the bottom of the outer extension support block (16) is provided with a second positioning column (17) corresponding to the first positioning column (15), and the spring (18) is sleeved between the first positioning column (15) and the second positioning column (17).

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